Sažetak
Today, in modern industrial plants, the usage of modern ultrasonic sensors for level measuring in container can be successfully integrated in automated plants and processes. This paper describes the device for measuring the level with contactless method by an ultrasonic sensor. The advantages of the ultrasonic level measuring are low price of transducers, simplification of processing the information and the fact that changes in pressure, temperature or type of materials in container do not affect measuring. The measuring transducer is designed for implementation in the established standard automation systems, i.e. for a connection with a programmable logic controller, and it has a local visual display of the measuring value. The device was tested and used in laboratory exercises at Zagreb Polytechnic. The obtained results were statistically analyzed, as described in this paper, and it has been confirmed that the device meets the acceptance criteria.
Ključne riječi
level measuring ; ultrasound ; industrial plant